One thing to note on gears, they don't do anything other than multiply torque and help you to accelerate through the rpm band quicker. Don't be mislead into thinking they will make your car measurably quicker on the track/street over a real power mod like an intake and such. The car will feel quicker with the gears, but in reality it may very well be faster with power mods. For example, I swapped from stock gears/stock H pipe to 3.73's, mufflers, K&N w/ removed air silencer and an off road X pipe and went from 15.2 at 90 to 15.0 at 91.5. I later swapped in an edelbrock performer intake, 65mm TB, and shorty headers and went from a 14.6 at 94.89mph to a 14.3 at 97.2. Its not an apples to apples comparison but it should show that with with other mods the gears did not show gains like the true power mods of the intake did.
